Finding the Third Proportional to 287,381,978.16 and 629,170,167.94

Step by Step Solution

1. Step 1: Write the proportion equation
   287,381,978.16 : 629,170,167.94 = 629,170,167.94 : x
2. Step 2: Convert to fraction form
   287,381,978.16/629,170,167.94 = 629,170,167.94/x
3. Step 3: Cross multiply
   287,381,978.16x = 629,170,167.94 × 629,170,167.94
4. Step 4: Simplify right side
   287,381,978.16x = 395,855,100,222,501,952
5. Step 5: Solve for x
   x = 395,855,100,222,501,952/287,381,978.16
6. Step 6: Final answer
   x = 1,377,452,764.30